I hope he takes up, like, another hobby. I hope he starts knitting, like I do. I think it’ll be a good time for him to slow down and just, I don’t know, like appreciate life. And tap into a lot of the things that he couldn’t do because he was working so much or had these, like, time constraints. I hope that it opens up some of those creative outlets, but that’s obviously just me, the creative child.
Let him play the supportive role with grace and dignity, like the female first and second spouses have done. He's inventing the masculine version of a traditional role. I've seen some people say that the arrival of a man into this role ought to be an occasion for getting rid of it altogether — as if the role itself is sexist, and putting a man in it reveals that it was never a good at all. But I'd say that line of reasoning is sexist.
BUT: Just clicking on footnotes at Emhoff's Wikipedia page, I see "Kamala Harris’s Husband Named to Faculty at Georgetown Law":
Emhoff will be a Distinguished Visitor from Practice focusing on media and entertainment law, which he practiced for nearly three decades as a partner at DLA Piper. He will also serve as a distinguished fellow of the school’s Institute for Technology Law and Policy.
Dad needs a hobby. Ha ha. Being a law professor is a hobby. Or such a nothing pastime that you need to load in something like knitting to keep from being at loose ends.
That NYT question — "Your dad has never not worked, right? What do you think that’s going to be like for him?" — contains the inference that to be a law professor is not to work!